In the town of Bol, Croatia, there lives a big yellow post box. Resting against a grey, cobbled wall, its glass front winks merrily at passers-by in the beautiful Dalmatian Sun as it waits for its next customer. But it has no ordinary customers. For it is no ordinary post box. In it, anyone can drop off BOOKs- used, old, new for someone else to pick up what they find interesting. No governance. No fee. And that simple little system is symBOLic (this pun wrote itself, I promis